CN2669475Y - Three-phase motor electricity-saving device - Google Patents
Three-phase motor electricity-saving device Download PDFInfo
- Publication number
- CN2669475Y CN2669475Y CNU2003201171527U CN200320117152U CN2669475Y CN 2669475 Y CN2669475 Y CN 2669475Y CN U2003201171527 U CNU2003201171527 U CN U2003201171527U CN 200320117152 U CN200320117152 U CN 200320117152U CN 2669475 Y CN2669475 Y CN 2669475Y
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- CN
- China
- Prior art keywords
- circuit
- controllable silicon
- phase
- operational amplifier
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 229910052710 silicon Inorganic materials 0.000 claims abstract description 39
- 239000010703 silicon Substances 0.000 claims abstract description 39
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 31
- 230000005611 electricity Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 3
- 230000000694 effects Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The utility model discloses a three-phase motor electricity savor which can effectively solve the problem that when a motor is in the state of empty load of light load, the electric energy is wasted. The electricity savor comprises controllable silicon, a controlled silicon trigger circuit, and a supply terminal, and a rectifying circuit is arranged between the controllable silicon and the supply terminal; a phase current testing circuit is arranged between the controllable silicon and the connecting line of the electric machine, the output terminal of the electric power supply of the rectifying circuit is connected with a starting control circuit, and the signal output terminals of the starting control circuit and the phase current testing circuit are connected with a controllable silicon current flow angle regulating circuit; the signal output terminal of the controllable silicon current flow angle regulating circuit is connected to the controllable silicon trigger circuit, and the output terminal of the electric power supply of the rectifying circuit provides DC working voltages to the phase current testing circuit, the starting control circuit, and the controllable silicon current flow angle regulating circuit. The utility model has the advantages of simple structure, small size, light weight, convenient installation, and obvious effect of electric power saving, especially suitable for being used with three-phase motors which work intermittently and whose loads often vary.
Description
Technical field
The utility model relates to a kind of electricity-saving appliance, particularly a kind of three-phase motor power saver.
Background technology
In industrial and agricultural production, extensively adopt three phase electric machine to do power.The selected motor of plant equipment that present factory generally uses all is to come supporting according to the required maximum power of machinery, Man Zai time seldom in actual use, as press machine, stretcher, injection machine etc. all is intermittently used, motor moves under be everlasting zero load or light condition, causes power wastage.Therefore in order to address this problem, people design a lot of ways, and diversified electricity-saving appliance arises at the historic moment, and reduce voltage when the electricity-saving appliance great majority that use utilize the motor underloading at present and reach economize on electricity.Having a kind of is to utilize the principle that changes motor star delta connection, realizes the purpose of economize on electricity.But this electricity-saving appliance is that the star triangle that utilizes relay to change motor connects, the relay frequent movement, and the contact is damaged easily and is caused loose contact.A kind of electricity-saving appliance is arranged in addition, utilize on three reactors major loop that is serially connected in motor in parallel with three bidirectional triode thyristors, the work of the full conducting motor of full load controllable silicon total head, controllable silicon turn-offs during underloading, electric current produces pressure drop through reactor, thereby the motor low pressure operation reaches the purpose of economize on electricity.But, on this electricity-saving appliance reactor is housed, and the winding volume of reactor being big, iron core is heavy, and inconvenience is installed, and the certain electric energy of loss.
Summary of the invention
The purpose of this utility model be to avoid above-mentioned the deficiencies in the prior art part and provide a kind of can be according to the three-phase motor power saver of the variation self-regulation motor power output of motor load.
For realizing the purpose of this utility model, described three-phase motor power saver comprises the controllable silicon that is serially connected in the motor circuitry phase, thyristor gating circuit, and supply terminals is provided with rectification circuit between controllable silicon and supply terminals; Between controllable silicon and motor line, be provided with the phase current testing circuit; The rectification circuit power output end is connected to the start-up control circuit; The signal output part of start-up control circuit, phase current testing circuit is connected to thyristor operating angle and adjusts circuit; The signal output part that thyristor operating angle is adjusted circuit is connected to thyristor gating circuit; The power output end of rectification circuit is adjusted circuit for phase current testing circuit, start-up control circuit and thyristor operating angle direct-current working volts is provided.
Owing to taken start-up control circuit, phase current testing circuit, thyristor operating angle adjustment circuit.Adjust circuit by thyristor operating angle, can make thyristor operating angle obtain changing, the voltage that is added on the motor is raise or price reduction.When on the supply terminals during no-voltage, the start-up control circuit reset.When supply terminals adds voltage, one of start-up control circuit output reduces the thyristor operating angle that controls signal to of voltage and adjusts circuit, and thyristor gating circuit control controllable silicon output voltage is reduced, and reduces the electric motor starting electric current.When motor was in zero load or underloading, the electric current on the motor incoming line was little, and the phase current testing circuit is output signal not.When the driven by motor load, electric current on the motor incoming line increases, the phase current testing circuit outputs signal to thyristor operating angle and adjusts circuit, make the complete conducting of thyristor gating circuit control controllable silicon, realize the full conducting of heavily loaded controllable silicon, zero load or the conducting of underloading part reduce voltage and current, realize economize on electricity.
Description of drawings
The drawing of accompanying drawing is described as follows:
Fig. 1 is the circuit block diagram of the utility model three-phase motor power saver.
Fig. 2 is for realizing the circuit theory diagrams of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in further detail:
As shown in fig. 1, the utility model three-phase motor power saver comprises the controllable silicon VT that is serially connected in the motor M circuitry phase
1, VT
2, VT
3, thyristor gating circuit, supply terminals, rectification circuit, the phase current testing circuit, the start-up control circuit, thyristor operating angle is adjusted circuit.
As shown in Figure 2, described thyristor gating circuit has three, includes resistance R respectively
1, capacitor C
1, diac DZ
1Resistance R
2, capacitor C
2, diac DZ
2Resistance R
3, capacitor C
3, diac DZ
3
Described rectification circuit comprises the transformer B that is connected on the supply terminals
2, be connected on transformer B
2Rectifier bridge D on secondary
2, capacitor C
4, resistance R
19
Described thyristor operating angle is adjusted circuit and is located at respectively on the corresponding thyristor gating circuit, comprises being attempted by angle of flow fixed resistance R in the thyristor gating circuit
1, R
2, R
3Optical coupling controllable silicon VT on the two ends
4, VT
5, VT
6, at optical coupling controllable silicon VT
4, VT
5, VT
6On be serially connected with the angle of flow and adjust resistance R
4, R
5, R
6, optical coupling controllable silicon VT
4, VT
5, VT
6The positive pole of last light-emitting diode is by current-limiting resistance R
7, R
8, R
9Be connected to rectification circuit output end, optical coupling controllable silicon VT
4, VT
5, VT
6The negative pole of last light-emitting diode and switch triode VT
7Collector electrode connect switch triode VT
7Base stage be connected to the output of operational amplifier IC-1, the negative input end of operational amplifier IC-1 is connected to the sample resistance R that is serially connected in rectification circuit output end
10And between the W, the positive input terminal of operational amplifier IC-1 is connected to the signal output part of start-up control circuit, phase current testing circuit.
Described phase current testing circuit comprises and is serially connected in controllable silicon VT
1Transformer B1 primary coil with on the motor M power line is connected to rectifier bridge D at the transformer secondary output coil output
1, rectifier bridge D
1Power output end is a signal output part, is connected to resistance R at power output end
12With voltage stabilizing didoe Z, prevent that output voltage is too high and burn other components and parts.
Described start-up control circuit comprises that positive input terminal is connected to voltage ratio than resistance R
15, R
16On operational amplifier IC-2, the negative input end of operational amplifier IC-2 is connected to the serial connection capacitor C that is serially connected on the dc power output end
6, C
7Tie point on, in the capacitor C of ground connection
7Two ends are connected to discharge resistance R
14, the output of operational amplifier IC-2 is by an isolating diode D
3As signal output part.
Start-up control circuit and phase current testing circuit, make motor M output electronegative potential when starting and underloading control signal to thyristor operating angle and adjust circuit, making thyristor gating circuit control silicon controlled output voltage is 320 volts, and current of electric is reduced, and reaches purpose of energy saving.Current of electric increases when the motor heavy duty, and the electric current of phase current testing circuit increases simultaneously, makes the optical coupling controllable silicon VT in the thyristor operating angle adjustment circuit
4, VT
5, VT
6Conducting, thus trigger current increased, make the controllable silicon VT of each phase
1, VT
2, VT
3Full conducting, the voltage that is added on the motor raises, and the motor power output increases, and guarantees the motor operate as normal.
LED 2 (green), diode D
5And resistance R
18Series connection is connected across between two phase power ends of motor, and LED 2 (green) is luminous during energising, makes power supply indicator.LED 1 (red), diode D
4And resistance R
17Series connection also meets controllable silicon VT
2Two ends, LED 1 (red) is luminous during the motor underloading, makes the economize on electricity indicator light.
Rectification circuit, thyristor gating circuit is common circuit, and its operation principle is not described further at this.
The operation principle of start-up control circuit is: energized moment, direct-current working volts are through capacitor C
6To C
7Charging, at this moment the 6 pin current potentials of amplifier IC-2 are than 5 pin current potential height, and 7 pin output electronegative potential is through diode D
3Enter 3 pin of amplifier IC-1, output 1 pin electronegative potential, triode VT
7Do not work optical coupling controllable silicon VT
4, VT
5, VT
6Do not work, by resistance R yet
1, R
2, R
3Control controllable silicon VT
1, VT
2, VT
3The angle of flow, making its output voltage is 320 volts, reduces the starting voltage of motor, reaches energy-conservation purpose, behind the electric motor starting, is connected in parallel on capacitor C
7On resistance R
14To capacitor discharge, approximately the 5 pin current potentials of 2-3 amplifier IC-2 after second are than 6 pin current potential height, and 7 pin are exported high potential, diode D
3End.
The operation principle of current sampling amplifying circuit is: electric current increases when the motor heavy service, the electric current that is connected on the transformer B1 primary coil of L1 phase also increases, the voltage of secondary coil raises, output current is added to 3 pin of amplifier IC-1 behind rectifying and wave-filtering, 3 pin obtain high potential, and the output 1 pin high potential of amplifier IC-1 is through resistance R
11Drive triode VT
7Conducting, at this moment optical coupling controllable silicon VT
4, VT
5, VT
6Conducting simultaneously is respectively with resistance R
4, R
5, R
6Be connected in parallel on resistance R
1, R
2, R
3On, be added in the trigger current increase that SCR control extremely goes up, make controllable silicon VT
1, VT
2, VT
3Full conducting, the running working properly of motor total head.Electric current diminishes when the motor light running, and the electric current that is connected on the transformer B1 input coil of L1 phase also diminishes, and the voltage of output winding reduces, and 3 pin of amplifier IC-1 become electronegative potential, output 1 pin electronegative potential, triode VT
7Do not work optical coupling controllable silicon VT
4, VT
5, VT
6Not conducting is added in the trigger current minimizing that SCR control extremely goes up, and output voltage is 320 volts, and the operating voltage when reducing empty load of motor or underloading reaches energy-conservation purpose.
The utility model is simple in structure, and volume is little, and is in light weight, easy for installation, and power savings is obvious, is particularly suitable for load and often changes and the supporting use of intermittently used three phase electric machine.
Claims (5)
1. a three-phase motor power saver comprises the controllable silicon that is serially connected in the motor circuitry phase, thyristor gating circuit, and supply terminals is characterized in that:
Between controllable silicon and supply terminals, be provided with rectification circuit;
Between controllable silicon and motor line, be provided with the phase current testing circuit;
The rectification circuit power output end is connected to the start-up control circuit;
The signal output part of start-up control circuit, phase current testing circuit is connected to thyristor operating angle and adjusts circuit;
The signal output part that thyristor operating angle is adjusted circuit is connected to thyristor gating circuit;
The power output end of rectification circuit is adjusted circuit for phase current testing circuit, start-up control circuit and thyristor operating angle direct-current working volts is provided.
2. three-phase motor power saver according to claim 1, it is characterized in that but described thyristor operating angle adjusts circuit and comprise and be attempted by the optical coupling silicon on the angle of flow fixed resistance two ends in the thyristor gating circuit, but on optical coupling silicon, be serially connected with the angle of flow and adjust resistance, but the positive pole of light-emitting diode is connected to rectification circuit output end on the optical coupling silicon, but the negative pole of light-emitting diode is connected with the collector electrode of switch triode on optical coupling silicon, the base stage of switch triode is connected to the output of operational amplifier, the negative input end of operational amplifier is connected between the sample resistance that is serially connected in rectification circuit output end, and the positive input terminal of operational amplifier is connected to the start-up control circuit, the signal output part of phase current testing circuit.
3. three-phase motor power saver according to claim 1 and 2, it is characterized in that described phase current testing circuit comprises the transformer that is serially connected on controllable silicon and the motor power-supply wire, be connected to rectifier bridge at the transformer secondary output coil output, the rectifier bridge power output end is a signal output part.
4. three-phase motor power saver according to claim 1 and 2, it is characterized in that described start-up control circuit comprises that positive input terminal is connected to the more ohmically operational amplifier of voltage ratio, the negative input end of operational amplifier is connected on the tie point of the serial connection electric capacity that is serially connected on the power output end, electric capacity two ends ground connection are connected to discharge resistance, and the output of operational amplifier passes through an isolating diode as signal output part.
5. three-phase motor power saver according to claim 3, it is characterized in that described start-up control circuit comprises that positive input terminal is connected to the more ohmically operational amplifier of voltage ratio, the negative input end of operational amplifier is connected on the tie point of the serial connection electric capacity that is serially connected on the power output end, electric capacity two ends ground connection are connected to discharge resistance, and the output of operational amplifier passes through an isolating diode as signal output part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201171527U CN2669475Y (en) | 2003-10-14 | 2003-10-14 | Three-phase motor electricity-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201171527U CN2669475Y (en) | 2003-10-14 | 2003-10-14 | Three-phase motor electricity-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2669475Y true CN2669475Y (en) | 2005-01-05 |
Family
ID=34438955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201171527U Expired - Fee Related CN2669475Y (en) | 2003-10-14 | 2003-10-14 | Three-phase motor electricity-saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2669475Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100428624C (en) * | 2006-10-08 | 2008-10-22 | 鹤山市多普乐高新节电技术有限公司 | Electricity saving device of full automatic three-phase motor |
| CN104242737A (en) * | 2013-06-18 | 2014-12-24 | 张顺利 | Servo interruption power supply power-variable energy-saving method for alternating-current motor |
| CN107231067A (en) * | 2017-08-14 | 2017-10-03 | 江苏星宇电机有限公司 | A kind of energy-saving motor |
| CN107231112A (en) * | 2017-08-14 | 2017-10-03 | 高玉琴 | Current control formula electric motor electricity saver |
| CN107302331A (en) * | 2017-08-14 | 2017-10-27 | 高玉琴 | Current trigger formula electric motor electricity saver |
| CN107493053A (en) * | 2017-08-29 | 2017-12-19 | 高玉琴 | A kind of electricity-saving control cabinet of motor |
-
2003
- 2003-10-14 CN CNU2003201171527U patent/CN2669475Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100428624C (en) * | 2006-10-08 | 2008-10-22 | 鹤山市多普乐高新节电技术有限公司 | Electricity saving device of full automatic three-phase motor |
| CN104242737A (en) * | 2013-06-18 | 2014-12-24 | 张顺利 | Servo interruption power supply power-variable energy-saving method for alternating-current motor |
| CN107231067A (en) * | 2017-08-14 | 2017-10-03 | 江苏星宇电机有限公司 | A kind of energy-saving motor |
| CN107231112A (en) * | 2017-08-14 | 2017-10-03 | 高玉琴 | Current control formula electric motor electricity saver |
| CN107302331A (en) * | 2017-08-14 | 2017-10-27 | 高玉琴 | Current trigger formula electric motor electricity saver |
| CN107493053A (en) * | 2017-08-29 | 2017-12-19 | 高玉琴 | A kind of electricity-saving control cabinet of motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HESHAN CITY NUMBER, DUOPULE HIGH-TECH ENERGY-SAVI Free format text: FORMER OWNER: LI ZHICHENG; PATENTEE Effective date: 20061201 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20061201 Address after: 529700 No. 588, Heshan Avenue, Heshan, Guangdong Patentee after: Duopule Hi-New Electricity Saving Tech Co., Ltd., Heshan City Address before: 529700, Xinli Electric Appliance Industry Co., Ltd., 588 Heshan Road, Heshan, Guangdong Co-patentee before: Chen Jinglin Patentee before: Li Zhicheng |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |